Fix typo in MediaRecorder-mimetype.html

R=tguilbert

Bug: b/40257965
Change-Id: I3534a473cf8e70198415a9bfba6fb0ab18648aff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5288814
Auto-Submit: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1259529}
diff --git a/mediacapture-record/MediaRecorder-mimetype.html b/mediacapture-record/MediaRecorder-mimetype.html
index 30df91c..74248d6 100644
--- a/mediacapture-record/MediaRecorder-mimetype.html
+++ b/mediacapture-record/MediaRecorder-mimetype.html
@@ -20,7 +20,7 @@
   'audio/ogg; codecs="opus"',
   'audio/webm; codecs="vorbis"',
   'audio/webm; codecs="opus"',
-  'aduio/mp4: codecs="mp4a.40.2"',
+  'audio/mp4: codecs="mp4a.40.2"',
 ];
 
 const VIDEO_ONLY_MIME_TYPES = [